From 191c21afaad67da06ffc9484ef888ba3e794d842 Mon Sep 17 00:00:00 2001
From: -k <slowdive@me.com>
Date: Thu, 17 Oct 2024 22:23:38 -0700
Subject: [PATCH] perf(pwa): store updated content only

---
 static/sw.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/static/sw.js b/static/sw.js
index 44f57ae..d9a1c0a 100644
--- a/static/sw.js
+++ b/static/sw.js
@@ -58,7 +58,9 @@ onfetch = (event) => {
         return cache.match(event.request)
           .then((cachedResponse) => {
             const fetchedResponse = fetch(event.request).then((networkResponse) => {
-              if (networkResponse.status < 400) {
+              if ((networkResponse.status < 400)
+                  && (cachedResponse.headers.get("Last-Modified")
+                      !== networkResponse.headers.get("Last-Modified"))) {
                 console.log("Caching the response to", event.request.url);
                 cache.put(event.request, networkResponse.clone());
               } else {